The pressure is measured on pounds per square inch and is the reduction in pressure
within the carbonated water line between the carbonator outlet and the valve inlet while
carbonated water is being drawn.
The amount of pressure drop will vary with the length of the line, size of the tubing used,
(inside Diameter), the rise of the line, and the flow of the carbonated water through the
line, (gallons per hour).
Carbonated water lift pressure is .45 pounds per foot rise.
The pressure drop within a carbonated water line should not exceed 30 P.S.I.
When soda lines are run more than 10 feet in any one direction a minimum of 3/8” tubing
is recommended. When soda lines are run more than 50 feet 1/2” tubing is
recommended.
When syrup lines are run more than 50 feet in any one direction a minimum of 3/8” tubing
is recommended.
Braided Plastic Tubing – The flexible braided plastic tubing is used for carbonated water
as well as all syrup lines. It will withstand high pressure and is easily installed because of
its flexibility but should never be used in contact with hot water or steam lines.
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